2. Question

Parali I island sometime seen in news is located in

a) Lakshadweep

b) South China Sea

c) Andaman and Nicobar

d) Sea of Japan

Correct

Solution: a)

This was in news in 2017. Parali I island, one of the uninhabited islands that is a part of Lakshadweep has vanished due to coastal erosion and another four such territories in the sea are shrinking fast, claims a new study.

Incorrect

Solution: a)

This was in news in 2017. Parali I island, one of the uninhabited islands that is a part of Lakshadweep has vanished due to coastal erosion and another four such territories in the sea are shrinking fast, claims a new study.

Question 3 of 5

3. Question

Consider the following statements about ozone hole formation.

It occurs only in the Arctic Region.

Polar stratospheric clouds (PSCs) play a central role in the formation of the ozone hole.

Which of the above statements is/are correct?

a) 1 only

b) 2 only

c) Both 1 and 2

d) Neither 1 nor 2

Correct

Solution: b)

Polar stratospheric clouds (PSCs) play a central role in the formation of the ozone hole in the Antarctic and Arctic. PSCs provide surfaces upon which heterogeneous chemical reactions take place. These reactions lead to the production of free radicals of chlorine in the stratosphere which directly destroy ozone molecules.

Incorrect

Solution: b)

Polar stratospheric clouds (PSCs) play a central role in the formation of the ozone hole in the Antarctic and Arctic. PSCs provide surfaces upon which heterogeneous chemical reactions take place. These reactions lead to the production of free radicals of chlorine in the stratosphere which directly destroy ozone molecules.

Question 4 of 5

4. Question

Carbon dioxide is naturally fixed by converting it into

Glucose

Carbonates

Select the right code

a) 1 only

b) 2 only

c) Both

d) None

Correct

Solution: c)

The percentage of carbon dioxide in our atmosphere is a mere fraction of a percent because carbon dioxide is ‘fixed’ in two ways: (i) Green plants convert carbon dioxide into glucose in the presence of Sunlight and (ii) many marine animals use carbonates dissolved in sea-water to make their shells.

Incorrect

Solution: c)

The percentage of carbon dioxide in our atmosphere is a mere fraction of a percent because carbon dioxide is ‘fixed’ in two ways: (i) Green plants convert carbon dioxide into glucose in the presence of Sunlight and (ii) many marine animals use carbonates dissolved in sea-water to make their shells.

Question 5 of 5

5. Question

Consider the following statements regarding ‘Earth Day’

It is an initiative of the World Wide Fund for Nature (WWF)

It is a movement in which the participants switch off the lights for one hour on a certain day every year.

It is a movement to raise the awareness about protection of the environment

Which of the above statements is/are correct?

a) 1, 2

b) 1, 3

c) 3 only

d) 1, 2, 3

Correct

Solution: c)

Earth Day

Earth Day is an annual event celebrated on April 22. Worldwide, various events are held to demonstrate support for environmental protection. First celebrated in 1970, Earth Day events in more than 193 countries are now coordinated globally by the Earth Day Network.

Earth Hour is a worldwide movement organized by the World Wide Fund for Nature (WWF). The event is held annually encouraging individuals, communities, and businesses to turn off non-essential electric lights for one hour, from 8:30 to 9:30 pm on a specific day towards the end of March, as a symbol of commitment to the planet. It was started as a lights-off event in Sydney, Australia, in 2007. Since then, it has grown to engage more than 7,000 cities and towns across 187 countries and territories.

Incorrect

Solution: c)

Earth Day

Earth Day is an annual event celebrated on April 22. Worldwide, various events are held to demonstrate support for environmental protection. First celebrated in 1970, Earth Day events in more than 193 countries are now coordinated globally by the Earth Day Network.

Earth Hour is a worldwide movement organized by the World Wide Fund for Nature (WWF). The event is held annually encouraging individuals, communities, and businesses to turn off non-essential electric lights for one hour, from 8:30 to 9:30 pm on a specific day towards the end of March, as a symbol of commitment to the planet. It was started as a lights-off event in Sydney, Australia, in 2007. Since then, it has grown to engage more than 7,000 cities and towns across 187 countries and territories.